sender.cs

破解的飞信源代码

namespace Imps.Client.Core.P2P.BlockingTransportor
{
    using Imps.Client.Core;
    using Imps.Client.Core.P2P.FileTransportor;
    using Imps.Client.Core.P2P.ICE;
    using Imps.Client.Utils;
    using NCindy.Session.AIO;
    using System;
    using System.Diagnostics;
    using System.IO;
    using System.Net;
    using System.Net.Sockets;
    using System.Text;
    using System.Threading;

    public class Sender : TranBase
    {
        private const int MaxSendTimeoutCount = 0x1770;
        private readonly byte[] recvBuffer;
        private readonly AutoResetEvent shutdownEvent;
        private ILogicSocket tranSock;

        public Sender(PunchingResult result, TransportingFile file) : base(file, result)
        {
            this.shutdownEvent = new AutoResetEvent(false);
            this.recvBuffer = new byte[FileTransportorBase.ShutdownCmdLenght];
            this.Init(result.Local.FirstEndPoint);
        }

        private void DoAccept(object o)
        {
            ManualResetEvent event2 = (ManualResetEvent) o;
            try
            {
                base.socket.Listen(10);
                this.tranSock = base.socket.Accept();
            }
            catch (Exception exception)
            {
                ClientLogger.WriteGeneral("Accept failed.", exception.ToString());
            }
            finally
            {
                ClientLogger.WriteGeneral("DoAccept Exit.");
                event2.Set();
            }
        }

        private void DoSend()
        {
            using (FileStream stream = base.targetFile.InnerFileStream)
            {
                byte[] buffer = new byte[base.BufferSize];
                long num = 0;
                int num2 = 0;
                Stopwatch stopwatch = Stopwatch.StartNew();
                while (!base.stoped && (base.targetFile.CompletedSize < this.TranFileSize))
                {
                    base.pauseEvent.WaitOne();
                    if (num2 > 0x1770)
                    {
                        throw new SendTimeoutException();
                    }
                    if (!base.socket.Poll(0x186a0, SelectMode.SelectWrite))
                    {
                        num2++;
                    }
                    else
                    {
                        num2 = 0;
                        int size = stream.Read(buffer, 0, buffer.Length);
                        int num4 = this.tranSock.Send(buffer, size, SocketFlags.None);
                        if (num4 <= 0)
                        {
                            throw new RemoteSocketClosedException();
                        }
                        base.transportedBytes += num4;
                        base.targetFile.CompletedSize += num4;
                        base.targetFile.InnerFileStream.Position = base.targetFile.CompletedSize;
                        long num5 = stopwatch.get_ElapsedMilliseconds();
                        if ((num5 - num) >= 0x3e8)
                        {
                            base.FireBlockTransported(new BlockTranEventArgs(base.targetFile.CompletedSize, this.TranFileSize, stopwatch.get_ElapsedMilliseconds()));
                            num = num5;
                        }
                    }
                }
                base.FireBlockTransported(new BlockTranEventArgs(base.targetFile.CompletedSize, this.TranFileSize, stopwatch.get_ElapsedMilliseconds()));
            }
        }

        public override void Init(IPEndPoint ep)
        {
            base.Init(ep);
            if (base.socket.Connected)
            {
                this.tranSock = base.socket;
            }
            else
            {
                ManualResetEvent state = new ManualResetEvent(false);
                ThreadPool.QueueUserWorkItem(new WaitCallback(this.DoAccept), state);
                if (!state.WaitOne(0x7530, true))
                {
                    try
                    {
                        base.socket.Close();
                    }
                    catch
                    {
                    }
                    throw new Exception("Accept UDT connection timeout.");
                }
            }
        }

        protected override void InternalTransport()
        {
            AsyncCallback callback = null;
            try
            {
                if (callback == null)
                {
                    callback = delegate (IAsyncResult recvResult) {
                        AsyncCallback callback = null;
                        try
                        {
                            if (base.socket.EndReceive(recvResult) == FileTransportorBase.ShutdownCmdLenght)
                            {
                                try
                                {
                                    byte[] buffer = Encoding.UTF8.GetBytes("ShutdownOK");
                                    if (callback == null)
                                    {
                                        callback = delegate (IAsyncResult sendResult) {
                                            base.socket.EndSend(sendResult);
                                        };
                                    }
                                    base.socket.BeginSend(bytes, 0, bytes.Length, SocketFlags.None, callback, null);
                                }
                                catch (Exception exception)
                                {
                                    LogHelper.LogError(exception.ToString());
                                }
                                finally
                                {
                                    this.shutdownEvent.Set();
                                }
                            }
                        }
                        catch (Exception exception2)
                        {
                            LogHelper.LogError(exception2.ToString());
                        }
                    };
                }
                this.tranSock.BeginReceive(this.recvBuffer, 0, this.recvBuffer.Length, SocketFlags.None, callback, null);
                this.DoSend();
                if (!base.stoped)
                {
                    this.shutdownEvent.WaitOne();
                    if (base.targetFile.IsCompleted)
                    {
                        base.FireTransportCompleted();
                    }
                }
            }
            catch (Exception exception)
            {
                base.FireTransportFailed(new TranFailedEventArgs(exception));
            }
            finally
            {
                if (this.tranSock != null)
                {
                    try
                    {
                        this.tranSock.Close();
                    }
                    catch
                    {
                    }
                }
            }
        }

        public class SendTimeoutException : Exception
        {
        }
    }
}